2. Kadu - Kadu is an open source Gadu-Gadu protocol instant messenger client for Linux, BSD and Mac supporting the latest version of Gadu-Gadu protocol.
Kadu does not display the adds, is flexible and user-firendly.

4. MagRead - Using a hardware audio dongle, MagRead can read most magnetic stripe cards.
For credit cards, and ID cards issued in North America, it will also parse the
data and display it in a familiar format.